d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b316507576
freebsd-dev/sys/contrib/octeon-sdk/cvmx-access-native.h
Juli Mallett cea2b8b915 Update the port of FreeBSD to Cavium Octeon to use the Cavium Simple Executive 
library:
o) Increase inline unit / large function growth limits for MIPS to accommodate
   the needs of the Simple Executive, which uses a shocking amount of inlining.
o) Remove TARGET_OCTEON and use CPU_CNMIPS to do things required by cnMIPS and
   the Octeon SoC.
o) Add OCTEON_VENDOR_LANNER to use Lanner's allocation of vendor-specific
   board numbers, specifically to support the MR320.
o) Add OCTEON_BOARD_CAPK_0100ND to hard-wire configuration for the CAPK-0100nd,
   which improperly uses an evaluation board's board number and breaks board
   detection at runtime.  This board is sold by Portwell as the CAM-0100.
o) Add support for the RTC available on some Octeon boards.
o) Add support for the Octeon PCI bus.  Note that rman_[sg]et_virtual for IO
   ports can not work unless building for n64.
o) Clean up the CompactFlash driver to use Simple Executive macros and
   structures where possible (it would be advisable to use the Simple Executive
   API to set the PIO mode, too, but that is not done presently.)  Also use
   structures from FreeBSD's ATA layer rather than structures copied from
   Linux.
o) Print available Octeon SoC features on boot.
o) Add support for the Octeon timecounter.
o) Use the Simple Executive's routines rather than local copies for doing reads
   and writes to 64-bit addresses and use its macros for various device
   addresses rather than using local copies.
o) Rename octeon_board_real to octeon_is_simulation to reduce differences with
   Cavium-provided code originally written for Linux.  Also make it use the
   same simplified test that the Simple Executive and Linux both use rather
   than our complex one.
o) Add support for the Octeon CIU, which is the main interrupt unit, as a bus
   to use normal interrupt allocation and setup routines.
o) Use the Simple Executive's bootmem facility to allocate physical memory for
   the kernel, rather than assuming we know which addresses we can steal.
   NB: This may reduce the amount of RAM the kernel reports you as having if
       you are leaving large temporary allocations made by U-Boot allocated
       when starting FreeBSD.
o) Add a port of the Cavium-provided Ethernet driver for Linux.  This changes
   Ethernet interface naming from rgmxN to octeN.  The new driver has vast
   improvements over the old one, both in performance and functionality, but
   does still have some features which have not been ported entirely and there
   may be unimplemented code that can be hit in everyday use.  I will make
   every effort to correct those as they are reported.
o) Support loading the kernel on non-contiguous cores.
o) Add very conservative support for harvesting randomness from the Octeon
   random number device.
o) Turn SMP on by default.
o) Clean up the style of the Octeon kernel configurations a little and make
   them compile with -march=octeon.
o) Add support for the Lanner MR320 and the CAPK-0100nd to the Simple
   Executive.
o) Modify the Simple Executive to build on FreeBSD and to build without
   executive-config.h or cvmx-config.h.  In the future we may want to
   revert part of these changes and supply executive-config.h and
   cvmx-config.h and access to the options contained in those files via
   kernel configuration files.
o) Modify the Simple Executive USB routines to support getting and setting
   of the USB PID.
2010-07-20 19:25:11 +00:00

679 lines
25 KiB
C
Raw Blame History

/***********************license start***************
* Copyright (c) 2003-2009 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
*
*
* For any questions regarding licensing please contact marketing@caviumnetworks.com
*
***********************license end**************************************/
/**
* @file
* Functions for accessing memory and CSRs on Octeon when we are compiling
* natively.
*
* <hr>$Revision: 38306 $<hr>
*/
#ifndef __CVMX_ACCESS_NATIVE_H__
#define __CVMX_ACCESS_NATIVE_H__
#ifdef __cplusplus
extern "C" {
#endif
/**
* Returns the Octeon processor ID.
*
* @return Octeon processor ID from COP0
*/
static inline uint32_t cvmx_get_proc_id(void)
{
#ifdef CVMX_BUILD_FOR_LINUX_USER
extern uint32_t cvmx_app_init_processor_id;
return cvmx_app_init_processor_id;
#else
uint32_t id;
asm ("mfc0 %0, $15,0" : "=r" (id));
return id;
#endif
}
/**
* Convert a memory pointer (void*) into a hardware compatable
* memory address (uint64_t). Octeon hardware widgets don't
* understand logical addresses.
*
* @param ptr C style memory pointer
* @return Hardware physical address
*/
static inline uint64_t cvmx_ptr_to_phys(void *ptr)
{
if (CVMX_ENABLE_PARAMETER_CHECKING)
cvmx_warn_if(ptr==NULL, "cvmx_ptr_to_phys() passed a NULL pointer\n");
#ifdef CVMX_BUILD_FOR_UBOOT
/* U-boot is a special case, as it is running in error level, which disables the TLB completely.
** U-boot may use kseg0 addresses, or may directly use physical addresses already */
return(CAST64(ptr) & 0x7FFFFFFF);
#endif
#ifdef __linux__
if (sizeof(void*) == 8)
{
/* We're running in 64 bit mode. Normally this means that we can use
40 bits of address space (the hardware limit). Unfortunately there
is one case were we need to limit this to 30 bits, sign extended
32 bit. Although these are 64 bits wide, only 30 bits can be used */
if ((CAST64(ptr) >> 62) == 3)
return CAST64(ptr) & cvmx_build_mask(30);
else
return CAST64(ptr) & cvmx_build_mask(40);
}
else
{
#ifdef __KERNEL__
return (long)(ptr) & 0x1fffffff;
#else
extern uint64_t linux_mem32_offset;
if (cvmx_likely(ptr))
return CAST64(ptr) - linux_mem32_offset;
else
return 0;
#endif
}
#elif defined(_WRS_KERNEL)
return (long)(ptr) & 0x7fffffff;
#elif defined(VXWORKS_USER_MAPPINGS)
/* This mapping mode is used in vxWorks 5.5 to support 2GB of ram. The
2nd 256MB is mapped at 0x10000000 and the rest of memory is 1:1 */
uint64_t address = (long)ptr;
if (address & 0x80000000)
return address & 0x1fffffff; /* KSEG pointers directly map the lower 256MB and bootbus */
else if ((address >= 0x10000000) && (address < 0x20000000))
return address + 0x400000000ull; /* 256MB-512MB is a virtual mapping for the 2nd 256MB */
else
return address; /* Looks to be a 1:1 mapped userspace pointer */
#elif defined(__FreeBSD__) && defined(_KERNEL)
return (pmap_kextract((vm_offset_t)ptr));
#else
#if CVMX_USE_1_TO_1_TLB_MAPPINGS
/* We are assumung we're running the Simple Executive standalone. In this
mode the TLB is setup to perform 1:1 mapping and 32 bit sign extended
addresses are never used. Since we know all this, save the masking
cycles and do nothing */
return CAST64(ptr);
#else
if (sizeof(void*) == 8)
{
/* We're running in 64 bit mode. Normally this means that we can use
40 bits of address space (the hardware limit). Unfortunately there
is one case were we need to limit this to 30 bits, sign extended
32 bit. Although these are 64 bits wide, only 30 bits can be used */
if ((CAST64(ptr) >> 62) == 3)
return CAST64(ptr) & cvmx_build_mask(30);
else
return CAST64(ptr) & cvmx_build_mask(40);
}
else
return (long)(ptr) & 0x7fffffff;
#endif
#endif
}
/**
* Convert a hardware physical address (uint64_t) into a
* memory pointer (void *).
*
* @param physical_address
* Hardware physical address to memory
* @return Pointer to memory
*/
static inline void *cvmx_phys_to_ptr(uint64_t physical_address)
{
if (CVMX_ENABLE_PARAMETER_CHECKING)
cvmx_warn_if(physical_address==0, "cvmx_phys_to_ptr() passed a zero address\n");
#ifdef CVMX_BUILD_FOR_UBOOT
/* U-boot is a special case, as it is running in error level, which disables the TLB completely.
** U-boot may use kseg0 addresses, or may directly use physical addresses already */
if (physical_address >= 0x80000000)
return NULL;
else
return CASTPTR(void, (physical_address & 0x7FFFFFFF));
#endif
#ifdef __linux__
if (sizeof(void*) == 8)
{
/* Just set the top bit, avoiding any TLB uglyness */
return CASTPTR(void, CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, physical_address));
}
else
{
#ifdef __KERNEL__
return CASTPTR(void, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, physical_address));
#else
extern uint64_t linux_mem32_offset;
if (cvmx_likely(physical_address))
return CASTPTR(void, physical_address + linux_mem32_offset);
else
return NULL;
#endif
}
#elif defined(_WRS_KERNEL)
return CASTPTR(void, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, physical_address));
#elif defined(VXWORKS_USER_MAPPINGS)
/* This mapping mode is used in vxWorks 5.5 to support 2GB of ram. The
2nd 256MB is mapped at 0x10000000 and the rest of memory is 1:1 */
if ((physical_address >= 0x10000000) && (physical_address < 0x20000000))
return CASTPTR(void, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, physical_address));
else if ((physical_address >= 0x410000000ull) && (physical_address < 0x420000000ull))
return CASTPTR(void, physical_address - 0x400000000ull);
else
return CASTPTR(void, physical_address);
#elif defined(__FreeBSD__) && defined(_KERNEL)
#if defined(__mips_n64)
return CASTPTR(void, CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, physical_address));
#else
if (physical_address < 0x20000000)
return CASTPTR(void, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, physical_address));
else
panic("%s: mapping high address (%#jx) not yet supported.\n", __func__, (uintmax_t)physical_address);
#endif
#else
#if CVMX_USE_1_TO_1_TLB_MAPPINGS
/* We are assumung we're running the Simple Executive standalone. In this
mode the TLB is setup to perform 1:1 mapping and 32 bit sign extended
addresses are never used. Since we know all this, save bit insert
cycles and do nothing */
return CASTPTR(void, physical_address);
#else
/* Set the XKPHYS/KSEG0 bit as appropriate based on ABI */
if (sizeof(void*) == 8)
return CASTPTR(void, CVMX_ADD_SEG(CVMX_MIPS_SPACE_XKPHYS, physical_address));
else
return CASTPTR(void, CVMX_ADD_SEG32(CVMX_MIPS32_SPACE_KSEG0, physical_address));
#endif
#endif
}
/* The following #if controls the definition of the macro
CVMX_BUILD_WRITE64. This macro is used to build a store operation to
a full 64bit address. With a 64bit ABI, this can be done with a simple
pointer access. 32bit ABIs require more complicated assembly */
#if defined(CVMX_ABI_N64) || defined(CVMX_ABI_EABI)
/* We have a full 64bit ABI. Writing to a 64bit address can be done with
a simple volatile pointer */
#define CVMX_BUILD_WRITE64(TYPE, ST) \
static inline void cvmx_write64_##TYPE(uint64_t addr, TYPE##_t val) \
{ \
*CASTPTR(volatile TYPE##_t, addr) = val; \
}
#elif defined(CVMX_ABI_N32)
/* The N32 ABI passes all 64bit quantities in a single register, so it is
possible to use the arguments directly. We have to use inline assembly
for the actual store since a pointer would truncate the address */
#define CVMX_BUILD_WRITE64(TYPE, ST) \
static inline void cvmx_write64_##TYPE(uint64_t addr, TYPE##_t val) \
{ \
asm volatile (ST " %[v], 0(%[c])" ::[v] "r" (val), [c] "r" (addr)); \
}
#elif defined(CVMX_ABI_O32)
#ifdef __KERNEL__
#define CVMX_BUILD_WRITE64(TYPE, LT) extern void cvmx_write64_##TYPE(uint64_t csr_addr, TYPE##_t val);
#else
/* Ok, now the ugly stuff starts. O32 splits 64bit quantities into two
separate registers. Assembly must be used to put them back together
before they're used. What should be a simple store becomes a
convoluted mess of shifts and ors */
#define CVMX_BUILD_WRITE64(TYPE, ST) \
static inline void cvmx_write64_##TYPE(uint64_t csr_addr, TYPE##_t val) \
{ \
if (sizeof(TYPE##_t) == 8) \
{ \
uint32_t csr_addrh = csr_addr>>32; \
uint32_t csr_addrl = csr_addr; \
uint32_t valh = (uint64_t)val>>32; \
uint32_t vall = val; \
uint32_t tmp1; \
uint32_t tmp2; \
uint32_t tmp3; \
\
asm volatile ( \
".set push\n" \
".set mips64\n" \
"dsll %[tmp1], %[valh], 32\n" \
"dsll %[tmp2], %[csrh], 32\n" \
"dsll %[tmp3], %[vall], 32\n" \
"dsrl %[tmp3], %[tmp3], 32\n" \
"or %[tmp1], %[tmp1], %[tmp3]\n" \
"dsll %[tmp3], %[csrl], 32\n" \
"dsrl %[tmp3], %[tmp3], 32\n" \
"or %[tmp2], %[tmp2], %[tmp3]\n" \
ST " %[tmp1], 0(%[tmp2])\n" \
".set pop\n" \
: [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2), [tmp3] "=&r" (tmp3)\
: [valh] "r" (valh), [vall] "r" (vall), \
[csrh] "r" (csr_addrh), [csrl] "r" (csr_addrl) \
); \
} \
else \
{ \
uint32_t csr_addrh = csr_addr>>32; \
uint32_t csr_addrl = csr_addr; \
uint32_t tmp1; \
uint32_t tmp2; \
\
asm volatile ( \
".set push\n" \
".set mips64\n" \
"dsll %[tmp1], %[csrh], 32\n" \
"dsll %[tmp2], %[csrl], 32\n" \
"dsrl %[tmp2], %[tmp2], 32\n" \
"or %[tmp1], %[tmp1], %[tmp2]\n" \
ST " %[val], 0(%[tmp1])\n" \
".set pop\n" \
: [tmp1] "=&r" (tmp1), [tmp2] "=&r" (tmp2) \
: [val] "r" (val), [csrh] "r" (csr_addrh), \
[csrl] "r" (csr_addrl) \
); \
} \
}
#endif
#else
/* cvmx-abi.h didn't recognize the ABI. Force the compile to fail. */
#error: Unsupported ABI
#endif
/* The following #if controls the definition of the macro
CVMX_BUILD_READ64. This macro is used to build a load operation from
a full 64bit address. With a 64bit ABI, this can be done with a simple
pointer access. 32bit ABIs require more complicated assembly */
#if defined(CVMX_ABI_N64) || defined(CVMX_ABI_EABI)
/* We have a full 64bit ABI. Writing to a 64bit address can be done with
a simple volatile pointer */
#define CVMX_BUILD_READ64(TYPE, LT) \
static inline TYPE##_t cvmx_read64_##TYPE(uint64_t addr) \
{ \
return *CASTPTR(volatile TYPE##_t, addr); \
}
#elif defined(CVMX_ABI_N32)
/* The N32 ABI passes all 64bit quantities in a single register, so it is
possible to use the arguments directly. We have to use inline assembly
for the actual store since a pointer would truncate the address */
#define CVMX_BUILD_READ64(TYPE, LT) \
static inline TYPE##_t cvmx_read64_##TYPE(uint64_t addr) \
{ \
TYPE##_t val; \
asm volatile (LT " %[v], 0(%[c])": [v] "=r" (val) : [c] "r" (addr));\
return val; \
}
#elif defined(CVMX_ABI_O32)
#ifdef __KERNEL__
#define CVMX_BUILD_READ64(TYPE, LT) extern TYPE##_t cvmx_read64_##TYPE(uint64_t csr_addr);
#else
/* Ok, now the ugly stuff starts. O32 splits 64bit quantities into two
separate registers. Assembly must be used to put them back together
before they're used. What should be a simple load becomes a
convoluted mess of shifts and ors */
#define CVMX_BUILD_READ64(TYPE, LT) \
static inline TYPE##_t cvmx_read64_##TYPE(uint64_t csr_addr) \
{ \
if (sizeof(TYPE##_t) == 8) \
{ \
uint32_t csr_addrh = csr_addr>>32; \
uint32_t csr_addrl = csr_addr; \
uint32_t valh; \
uint32_t vall; \
\
asm volatile ( \
".set push\n" \
".set mips64\n" \
"dsll %[valh], %[csrh], 32\n" \
"dsll %[vall], %[csrl], 32\n" \
"dsrl %[vall], %[vall], 32\n" \
"or %[valh], %[valh], %[vall]\n" \
LT " %[vall], 0(%[valh])\n" \
"dsrl %[valh], %[vall], 32\n" \
"sll %[vall], 0\n" \
"sll %[valh], 0\n" \
".set pop\n" \
: [valh] "=&r" (valh), [vall] "=&r" (vall) \
: [csrh] "r" (csr_addrh), [csrl] "r" (csr_addrl) \
); \
return ((uint64_t)valh<<32) | vall; \
} \
else \
{ \
uint32_t csr_addrh = csr_addr>>32; \
uint32_t csr_addrl = csr_addr; \
TYPE##_t val; \
uint32_t tmp; \
\
asm volatile ( \
".set push\n" \
".set mips64\n" \
"dsll %[val], %[csrh], 32\n" \
"dsll %[tmp], %[csrl], 32\n" \
"dsrl %[tmp], %[tmp], 32\n" \
"or %[val], %[val], %[tmp]\n" \
LT " %[val], 0(%[val])\n" \
".set pop\n" \
: [val] "=&r" (val), [tmp] "=&r" (tmp) \
: [csrh] "r" (csr_addrh), [csrl] "r" (csr_addrl) \
); \
return val; \
} \
}
#endif /* __KERNEL__ */
#else
/* cvmx-abi.h didn't recognize the ABI. Force the compile to fail. */
#error: Unsupported ABI
#endif
/* The following defines 8 functions for writing to a 64bit address. Each
takes two arguments, the address and the value to write.
cvmx_write64_int64 cvmx_write64_uint64
cvmx_write64_int32 cvmx_write64_uint32
cvmx_write64_int16 cvmx_write64_uint16
cvmx_write64_int8 cvmx_write64_uint8 */
CVMX_BUILD_WRITE64(int64, "sd");
CVMX_BUILD_WRITE64(int32, "sw");
CVMX_BUILD_WRITE64(int16, "sh");
CVMX_BUILD_WRITE64(int8, "sb");
CVMX_BUILD_WRITE64(uint64, "sd");
CVMX_BUILD_WRITE64(uint32, "sw");
CVMX_BUILD_WRITE64(uint16, "sh");
CVMX_BUILD_WRITE64(uint8, "sb");
/* The following defines 8 functions for reading from a 64bit address. Each
takes the address as the only argument
cvmx_read64_int64 cvmx_read64_uint64
cvmx_read64_int32 cvmx_read64_uint32
cvmx_read64_int16 cvmx_read64_uint16
cvmx_read64_int8 cvmx_read64_uint8 */
CVMX_BUILD_READ64(int64, "ld");
CVMX_BUILD_READ64(int32, "lw");
CVMX_BUILD_READ64(int16, "lh");
CVMX_BUILD_READ64(int8, "lb");
CVMX_BUILD_READ64(uint64, "ld");
CVMX_BUILD_READ64(uint32, "lw");
CVMX_BUILD_READ64(uint16, "lhu");
CVMX_BUILD_READ64(uint8, "lbu");
static inline void cvmx_write_csr(uint64_t csr_addr, uint64_t val)
{
cvmx_write64_uint64(csr_addr, val);
/* Perform an immediate read after every write to an RSL register to force
the write to complete. It doesn't matter what RSL read we do, so we
choose CVMX_MIO_BOOT_BIST_STAT because it is fast and harmless */
if ((csr_addr >> 40) == (0x800118))
cvmx_read64_uint64(CVMX_MIO_BOOT_BIST_STAT);
}
static inline void cvmx_write_io(uint64_t io_addr, uint64_t val)
{
cvmx_write64_uint64(io_addr, val);
}
static inline uint64_t cvmx_read_csr(uint64_t csr_addr)
{
return cvmx_read64_uint64(csr_addr);
}
static inline void cvmx_send_single(uint64_t data)
{
const uint64_t CVMX_IOBDMA_SENDSINGLE = 0xffffffffffffa200ull;
cvmx_write64_uint64(CVMX_IOBDMA_SENDSINGLE, data);
}
static inline void cvmx_read_csr_async(uint64_t scraddr, uint64_t csr_addr)
{
union
{
uint64_t u64;
struct {
uint64_t scraddr : 8;
uint64_t len : 8;
uint64_t addr :48;
} s;
} addr;
addr.u64 = csr_addr;
addr.s.scraddr = scraddr >> 3;
addr.s.len = 1;
cvmx_send_single(addr.u64);
}
/**
* Number of the Core on which the program is currently running.
*
* @return Number of cores
*/
static inline unsigned int cvmx_get_core_num(void)
{
unsigned int core_num;
CVMX_RDHWRNV(core_num, 0);
return core_num;
}
/**
* Returns the number of bits set in the provided value.
* Simple wrapper for POP instruction.
*
* @param val 32 bit value to count set bits in
*
* @return Number of bits set
*/
static inline uint32_t cvmx_pop(uint32_t val)
{
uint32_t pop;
CVMX_POP(pop, val);
return pop;
}
/**
* Returns the number of bits set in the provided value.
* Simple wrapper for DPOP instruction.
*
* @param val 64 bit value to count set bits in
*
* @return Number of bits set
*/
static inline int cvmx_dpop(uint64_t val)
{
int pop;
CVMX_DPOP(pop, val);
return pop;
}
/**
* Provide current cycle counter as a return value
*
* @return current cycle counter
*/
static inline uint64_t cvmx_get_cycle(void)
{
#if defined(CVMX_ABI_O32)
uint32_t tmp_low, tmp_hi;
asm volatile (
" .set push \n"
" .set mips64r2 \n"
" .set noreorder \n"
" rdhwr %[tmpl], $31 \n"
" dsrl %[tmph], %[tmpl], 32 \n"
" sll %[tmpl], 0 \n"
" sll %[tmph], 0 \n"
" .set pop \n"
: [tmpl] "=&r" (tmp_low), [tmph] "=&r" (tmp_hi) : );
return(((uint64_t)tmp_hi << 32) + tmp_low);
#else
uint64_t cycle;
CVMX_RDHWR(cycle, 31);
return(cycle);
#endif
}
/**
* Reads a chip global cycle counter. This counts CPU cycles since
* chip reset. The counter is 64 bit.
* This register does not exist on CN38XX pass 1 silicion
*
* @return Global chip cycle count since chip reset.
*/
static inline uint64_t cvmx_get_cycle_global(void)
{
if (OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1))
return 0;
else
return cvmx_read64_uint64(CVMX_IPD_CLK_COUNT);
}
/**
* Wait for the specified number of cycle
*
* @param cycles
*/
static inline void cvmx_wait(uint64_t cycles)
{
uint64_t done = cvmx_get_cycle() + cycles;
while (cvmx_get_cycle() < done)
{
/* Spin */
}
}
/**
* Wait for the specified number of micro seconds
*
* @param usec micro seconds to wait
*/
static inline void cvmx_wait_usec(uint64_t usec)
{
uint64_t done = cvmx_get_cycle() + usec * cvmx_sysinfo_get()->cpu_clock_hz / 1000000;
while (cvmx_get_cycle() < done)
{
/* Spin */
}
}
/**
* Perform a soft reset of Octeon
*
* @return
*/
static inline void cvmx_reset_octeon(void)
{
cvmx_ciu_soft_rst_t ciu_soft_rst;
ciu_soft_rst.u64 = 0;
ciu_soft_rst.s.soft_rst = 1;
cvmx_write_csr(CVMX_CIU_SOFT_RST, ciu_soft_rst.u64);
}
/**
* Read a byte of fuse data
* @param byte_addr address to read
*
* @return fuse value: 0 or 1
*/
static inline uint8_t cvmx_fuse_read_byte(int byte_addr)
{
cvmx_mio_fus_rcmd_t read_cmd;
read_cmd.u64 = 0;
read_cmd.s.addr = byte_addr;
read_cmd.s.pend = 1;
cvmx_write_csr(CVMX_MIO_FUS_RCMD, read_cmd.u64);
while ((read_cmd.u64 = cvmx_read_csr(CVMX_MIO_FUS_RCMD)) && read_cmd.s.pend)
;
return(read_cmd.s.dat);
}
/**
* Read a single fuse bit
*
* @param fuse Fuse number (0-1024)
*
* @return fuse value: 0 or 1
*/
static inline int cvmx_fuse_read(int fuse)
{
return((cvmx_fuse_read_byte(fuse >> 3) >> (fuse & 0x7)) & 1);
}
#ifdef __cplusplus
}
#endif
#endif /* __CVMX_ACCESS_NATIVE_H__ */
Reference in New Issue View Git Blame Copy Permalink